Chapter 6 Output WWW.PALINFONET.COM p. 6

What is Output? What is output? Data that has been processed into a useful form, called information Output device is any hardware component that can convey information to user p. 292 Fig. 6-1 Next

Display Devices What is a display device? Output device that visually conveys information Information on display device sometimes called soft copy Monitor houses display device as separate peripheral p. 294 Fig. 6-2 Next

CRT Monitor What is a CRT monitor? Contains cathode-ray tube (CRT) Screen coated with tiny dots of phosphor material Each dot consists of a red, blue, and green phosphor Common sizes are 15, 17, 19, 21, and 22 inches Viewable size is diagonal measurement of actual viewing area p. 294 Fig. 6-3 Next

CRT Monitor What is resolution? Sharpness and clarity of image Higher resolution makes image sharper, displays more text on screen, makes some elements smaller Refresh rate is speed at which monitor redraws images on screen p. 295 Fig. 6-5 Next

CRT Monitor How does video travel from the processor to a CRT monitor? Video card (also called a graphics card) converts digital output from computer into analog video signal Step 5. Electron guns fire the three color signals to the front of the CRT. Step 1. The processor sends digital video data to the video card. Step 3. The analog signal is sent through a cable to the CRT monitor. Step 4. The CRT monitor separates the analog signal into red, green, and blue signals. Step 6. An image is displayed on the screen when the electrons hit phosphor dots on the back of the screen. Step 2. The video card’s digital-to-analog converter (DAC) converts the digital video data to an analog signal. p. 297 Fig. 6-6 Next

CRT Monitor What are video standards? Video Electronics Standards Association (VESA) develops video standards Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Video Memory below Chapter 6 p. 298 Fig. 6-7 Next

Flat-Panel Displays What is a flat panel display? Uses liquid crystal display Also called LCD monitor Takes up less desk space than CRT monitor Consumes less than one-third the power p. 299 Fig. 6-9 Next

Flat-Panel Displays What about using multiple LCD monitors? Some users position two or more monitors side by side or stacked Allows users to run multiple applications simultaneously p. 299 Fig. 6-10 Next

Flat-Panel Displays What are some mobile devices that have LCD screens? Tablet PCs Notebooks PDAs Smart phones p. 300 Fig. 6-11 Next

Flat-Panel Displays What is an electronic book (e-book)? Small, book-sized computer that uses LCD screen Allows users to read, save, highlight, bookmark, and add notes to online text Download new book content from Web p. 300 Next

Flat-Panel Displays How do you use an LCD monitor with a video card? Plug monitor into Digital Video Interface (DVI) port on computer standard monitor port S-video port DVI port p. 301 Fig. 6-13 Next

Flat-Panel Displays What is a gas plasma monitor? Displays image by applying voltage to layer of gas Larger screen size and higher display quality than LCD, but much more expensive p. 302 Fig. 6-14 Next

Printers What is a printer? portrait landscape What is a printer? Output device that produces text and graphics on paper Result is hard copy, or printout Two orientations: portrait and landscape Click to view animation p. 303 Fig. 6-15 Next

Printers What is a dot-matrix printer? Impact printer that produces printed images when tiny wire pins strike ribbon Impact printer forms characters by striking mechanism against inked ribbon that contacts paper p. 304 Fig. 6-17 Next

Printers What is a line printer? High-speed impact printer that prints entire line at a time Speed measured in lines per minute (lpm) Band printer prints fully formed characters using a hammer mechanism Shuttle-matrix printer is high-speed printer that works like dot-matrix printer p. 304 Fig. 6-18 Next

Printers What is an ink-jet printer? A type of nonimpact printer that sprays tiny drops of liquid ink onto paper Nonimpact printer forms characters and graphics without striking paper Prints in black-and-white or color on a variety of paper types p. 305 Fig. 6-19 Next

Printers What is a photo printer? Color printer that produces photo-lab-quality pictures Step 1. Take photograph with digital camera and store it on media card in the camera. media card media cards photo printer Step 2. Insert media card into card reader on photo printer. Click to view video Step 4. Remove printed photo from the printer. Step 3. Use menu to select desired image to print, view it on LCD screen, edit if necessary, select size of the print, and then print image. Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Photo Printers below Chapter 6 p. 307 Fig. 6-22 Next

Printers What is a laser printer? High-speed, high-quality nonimpact printer Prints text and graphics in very high-quality resolution, ranging from 600 to 2,400 dpi Typically costs more than ink-jet printer, but is much faster Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Laser Printers below Chapter 6 p. 309 Fig. 6-23 Next

Printers What is a mobile printer? Small, lightweight, battery-powered printer that allows mobile user to print from notebook computer, Tablet PC, or PDA while traveling p. 311 Fig. 6-26 Next

Printers What is a label printer? Small printer that prints on adhesive-type material Most also print bar codes Postage printer has built-in digital scale and prints postage stamps p. 311 Fig. 6-27 Next

Printers What is a plotter? Sophisticated printer used to produce high-quality drawings Large-format printer creates photo-realistic-quality color prints p. 312 Fig. 6-28 Next

Printers What is wireless printing? Output transmitted to printer wirelessly via infrared light waves or radio waves Bluetooth printing uses radio waves Devices need to be within 30-foot range Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Wireless Printing below Chapter 6 p. 312 Fig. 6-29 Next

Speakers and Headsets What is an audio output device? Computer component that produces music, speech, or other sounds Speakers and headsets are common devices Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Speakers and Headsets below Chapter 6 p. 313 Figs. 6-30–6-31 Next

Other Output Devices What is a fax modem? Modem that allows you to send and receive electronic documents as faxes internal fax card in system unit external fax modem Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Fax Modems below Chapter 6 fax machine p. 315 Fig. 6-34 Next

Other Output Devices What is a multifunction peripheral? Provides functionality of printer, scanner, copy machine, and fax machine Click to view Web Link, click Chapter 6, Click Web Link from left navigation, then click Multifunction Peripherals below Chapter 6 p. 316 Fig. 6-35 Next

Other Output Devices What is a data projector? Device that takes image from computer screen and projects it onto larger screen p. 316 Fig. 6-36 Next